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Morphology Unit 4: The Suffixing Rules

  • Writer: Jackie K.
    Jackie K.
  • Dec 9, 2025
  • 2 min read

Good Things Come in Threes

I suppose it's debatable if suffixing rules are "good", however I think it is good news that only three rules exist. Suffixing can seem overwhelming, as evidenced by the number of adults I've encountered that don't know when to double the final consonant, drop silent <e>, and change <y> to <I>. And there you have the three rules.


Heads up that I do not teach any new morphemes this unit. The focus lies solely on memorizing and implementing the suffixing rules. It's a great opportunity to revisit previously taught morphemes.


Below is the interactive Foundations Unit Plan where you can find tons of helpful links. Each blog post will include the typical grouping, methodology, suggested duration, and rationale. I included the objectives in the chart to give you a quick overview. The PDF column will take you to directly to TPT. You can grab the printable Unit Plan here.


Suffixing Rules Mastery Goal: 

Memorize and implement the three suffixing rules in order to correctly spell words and identify their morphemes.

Day

Blog Posts

The PDFs

Objectives

1

 Review morphemes to build automaticity.

2-3

None

Use inquiry to analyze and implement the Drop Silent <e> suffixing rule.

4

Define vocabulary terms in a competitive format.

5-6

None

Use inquiry to analyze and implement the Change <y> to <i>suffixing rule.

7

Enhance comprehension of key vocabulary through word generation, comparison, and contextual application in a competitive format.

8-9

None

Use inquiry to analyze and implement the Double the Final Consonant suffixing rule.

10

Apply morphemic segmentation to identify, define, and analyze words with targeted suffixes as they appear in a passage.

11

Review content in preparation for the quiz.

12

How To: Morphology Quizzes

Assess understanding of the unit objective.

Daily

None

Develop phonemic awareness.

Any

None

Apply morphological knowledge to build words.



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